you're watching "early today." >>> i'm lynn berry, and right now an unusual warning from north korea which says its missiles are capable of reaching the u.s. mainland, an apparent response to south korea's announcement of a deal with the u.s. to strengthen its own missile program. >>> well, he is known as the squirrel, and after his arrest he smiled and gave a thumbs up, but mexican authorities say salvador escobedo is a key lieutenant in the zetas drug cartel behind the killing of american david hartley who was jet skiing on a border lake two years ago. a zetas founder may have been killed sunday in what would be a major victory for president felipe calderon. >>> well, for the first time, less than half of all americans do not consider themselves protestant. now just 48%. what are the reasons? well, a pew research study finds many are opting out of religion altogether. nearly one in five say they are nothing in particular, agnostic or atheist. that's an 8% jump since 1990. >>> the mars curiosity rover has been digging up soil samples, but now that work is on hold because nasa wants